:root {
  --primary: #f97316;
  --primary-dark: #ea580c;
  --accent: #fbbf24;
  --bg: #0a0a0f;
  --bg2: #12121a;
  --bg3: #1a1a28;
  --surface: #1e1e2e;
  --surface2: #252535;
  --border: #2a2a3e;
  --text: #e2e8f0;
  --text2: #94a3b8;
  --text3: #64748b;
  --green: #10b981;
  --red: #ef4444;
  --blue: #6366f1;
  --font: 'Noto Sans SC', sans-serif;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); background: var(--bg); color: var(--text); line-height: 1.7; }
a { text-decoration: none; color: inherit; }
img { max-width: 100%; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* Navbar */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(10,10,15,0.95); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  height: 64px;
}
.nav-container { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.nav-logo { font-size: 1.4rem; font-weight: 900; color: var(--primary); display: flex; align-items: center; gap: 8px; }
.logo-icon { font-size: 1.6rem; }
.nav-links { display: flex; gap: 4px; }
.nav-link { padding: 8px 16px; border-radius: 8px; color: var(--text2); font-size: 0.95rem; font-weight: 500; transition: all 0.2s; }
.nav-link:hover { background: var(--surface); color: var(--primary); }
.nav-toggle { display: none; background: none; border: none; color: var(--text); font-size: 1.4rem; cursor: pointer; }

/* Hero */
.hero { position: relative; padding: 140px 0 80px; min-height: 600px; display: flex; align-items: center; overflow: hidden; }
.hero-bg {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at 30% 50%, rgba(249,115,22,0.15) 0%, transparent 60%),
              radial-gradient(ellipse at 80% 20%, rgba(99,102,241,0.1) 0%, transparent 50%),
              linear-gradient(180deg, var(--bg) 0%, var(--bg2) 100%);
}
.hero-content { position: relative; z-index: 1; text-align: center; max-width: 800px; margin: 0 auto; }
.hero-badge { display: inline-flex; align-items: center; gap: 6px; background: rgba(249,115,22,0.15); border: 1px solid rgba(249,115,22,0.3); color: var(--primary); padding: 6px 16px; border-radius: 100px; font-size: 0.85rem; font-weight: 600; margin-bottom: 24px; }
.hero-title { font-size: clamp(3rem, 8vw, 5.5rem); font-weight: 900; background: linear-gradient(135deg, #fff 0%, var(--primary) 50%, var(--accent) 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; line-height: 1.1; margin-bottom: 20px; }
.hero-subtitle { font-size: clamp(1rem, 2.5vw, 1.25rem); color: var(--text2); margin-bottom: 36px; }
.hero-search { display: flex; max-width: 560px; margin: 0 auto 40px; background: var(--surface); border: 1px solid var(--border); border-radius: 50px; overflow: hidden; }
.search-input { flex: 1; background: none; border: none; padding: 14px 24px; color: var(--text); font-size: 1rem; font-family: var(--font); outline: none; }
.search-input::placeholder { color: var(--text3); }
.search-btn { background: var(--primary); border: none; padding: 14px 28px; color: #fff; font-size: 0.95rem; font-weight: 600; cursor: pointer; transition: background 0.2s; font-family: var(--font); white-space: nowrap; }
.search-btn:hover { background: var(--primary-dark); }
.hero-stats { display: flex; justify-content: center; gap: 40px; }
.stat-item { text-align: center; }
.stat-num { display: block; font-size: 1.8rem; font-weight: 900; color: var(--primary); }
.stat-label { font-size: 0.85rem; color: var(--text3); }

/* Notice bar */
.notice-bar { background: var(--surface); border-bottom: 1px solid var(--border); padding: 12px 0; }
.notice-list { display: flex; gap: 24px; overflow-x: auto; }
.notice-item { display: flex; align-items: center; gap: 8px; white-space: nowrap; font-size: 0.9rem; color: var(--text2); }
.notice-item.type-2 { color: var(--primary); }
.notice-item.type-3 { color: var(--red); }

/* Categories */
.cat-nav { padding: 48px 0; }
.cat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 16px; }
.cat-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px 16px; text-align: center; transition: all 0.3s; cursor: pointer; }
.cat-card:hover { background: var(--surface2); border-color: var(--primary); transform: translateY(-4px); box-shadow: 0 8px 32px rgba(249,115,22,0.15); }
.cat-icon { display: block; font-size: 2rem; margin-bottom: 8px; }
.cat-name { display: block; font-size: 0.95rem; font-weight: 700; color: var(--text); margin-bottom: 4px; }
.cat-desc { display: block; font-size: 0.75rem; color: var(--text3); }

/* Sections */
.section { padding: 60px 0; }
.section-dark { background: var(--bg2); }
.section-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 32px; }
.section-title { font-size: 1.6rem; font-weight: 800; display: flex; align-items: center; gap: 10px; }
.more-link { color: var(--primary); font-size: 0.9rem; font-weight: 600; display: flex; align-items: center; gap: 6px; transition: gap 0.2s; }
.more-link:hover { gap: 10px; }

/* Article Grid */
.article-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; }
.article-grid.featured { grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); }
.article-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; transition: all 0.3s; display: block; }
.article-card:hover { border-color: var(--primary); transform: translateY(-4px); box-shadow: var(--shadow); }
.featured-card { position: relative; }
.card-badge { position: absolute; top: 16px; right: 16px; background: var(--primary); color: #fff; padding: 4px 10px; border-radius: 6px; font-size: 0.75rem; font-weight: 700; }
.card-body { padding: 20px; }
.card-category { font-size: 0.78rem; color: var(--primary); font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 10px; }
.card-title { font-size: 1.05rem; font-weight: 700; color: var(--text); line-height: 1.5; margin-bottom: 10px; }
.card-summary { font-size: 0.88rem; color: var(--text2); line-height: 1.6; margin-bottom: 14px; }
.card-meta { display: flex; gap: 16px; font-size: 0.8rem; color: var(--text3); margin-bottom: 12px; }
.card-meta span { display: flex; align-items: center; gap: 5px; }
.card-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tag { background: rgba(99,102,241,0.15); color: #818cf8; padding: 3px 10px; border-radius: 4px; font-size: 0.75rem; }
.badge-top { background: var(--primary); color: #fff; padding: 2px 8px; border-radius: 4px; font-size: 0.72rem; font-weight: 700; margin-right: 8px; }

/* Resources */
.resource-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; }
.resource-grid-large { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }
.resource-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; transition: all 0.3s; display: block; }
.resource-card:hover { border-color: var(--primary); transform: translateY(-3px); box-shadow: var(--shadow); }
.res-header { display: flex; gap: 14px; margin-bottom: 12px; align-items: center; }
.res-logo { width: 48px; height: 48px; border-radius: 12px; background: linear-gradient(135deg, var(--primary), var(--blue)); display: flex; align-items: center; justify-content: center; font-size: 1.4rem; font-weight: 900; color: #fff; flex-shrink: 0; }
.res-name { font-size: 1rem; font-weight: 700; color: var(--text); display: flex; align-items: center; gap: 6px; }
.res-quota { font-size: 0.8rem; color: var(--green); display: flex; align-items: center; gap: 5px; margin-top: 4px; }
.res-desc { font-size: 0.85rem; color: var(--text2); line-height: 1.6; margin-bottom: 14px; }
.res-footer { display: flex; justify-content: space-between; align-items: center; }
.res-diff { font-size: 0.78rem; padding: 3px 10px; border-radius: 4px; font-weight: 600; }
.diff-1 { background: rgba(16,185,129,0.15); color: var(--green); }
.diff-2 { background: rgba(251,191,36,0.15); color: var(--accent); }
.diff-3 { background: rgba(239,68,68,0.15); color: var(--red); }
.res-visit { font-size: 0.82rem; color: var(--primary); font-weight: 600; display: flex; align-items: center; gap: 6px; }
.badge-new { background: rgba(16,185,129,0.2); color: var(--green); padding: 2px 7px; border-radius: 4px; font-size: 0.7rem; font-weight: 700; }
.badge-hot { background: rgba(239,68,68,0.2); color: var(--red); padding: 2px 7px; border-radius: 4px; font-size: 0.7rem; font-weight: 700; }

/* Pagination */
.pagination { display: flex; justify-content: center; gap: 8px; margin-top: 40px; }
.page-btn { background: var(--surface); border: 1px solid var(--border); color: var(--text2); padding: 8px 14px; border-radius: 8px; font-size: 0.9rem; transition: all 0.2s; cursor: pointer; }
.page-btn:hover, .page-btn.active { background: var(--primary); border-color: var(--primary); color: #fff; }

/* Footer */
.footer { background: var(--bg2); border-top: 1px solid var(--border); padding: 60px 0 24px; margin-top: 60px; }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 40px; margin-bottom: 40px; }
.footer-col h4 { font-size: 1rem; font-weight: 700; margin-bottom: 16px; color: var(--text); }
.footer-col p { font-size: 0.88rem; color: var(--text3); line-height: 1.7; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul a { color: var(--text3); font-size: 0.88rem; transition: color 0.2s; }
.footer-col ul a:hover { color: var(--primary); }
.footer-domain { color: var(--primary); font-weight: 700; margin-top: 8px; }
.footer-bottom { border-top: 1px solid var(--border); padding-top: 24px; text-align: center; color: var(--text3); font-size: 0.85rem; }
/* ===== 文章详情�?===== */
.article-container { padding-top: 90px; padding-bottom: 60px; }
.breadcrumb { font-size: 0.85rem; color: var(--text3); margin-bottom: 24px; display: flex; align-items: center; gap: 8px; }
.breadcrumb a { color: var(--text3); }
.breadcrumb a:hover { color: var(--primary); }
.article-layout { display: grid; grid-template-columns: 1fr 280px; gap: 32px; align-items: start; }
.article-content { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.article-header { padding: 32px; border-bottom: 1px solid var(--border); }
.article-meta-top { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.article-cat { background: rgba(249,115,22,0.15); color: var(--primary); padding: 4px 12px; border-radius: 6px; font-size: 0.8rem; font-weight: 700; }
.article-title { font-size: clamp(1.4rem, 3vw, 2rem); font-weight: 900; line-height: 1.4; margin-bottom: 16px; color: var(--text); }
.article-info { display: flex; gap: 20px; font-size: 0.85rem; color: var(--text3); margin-bottom: 16px; }
.article-info span { display: flex; align-items: center; gap: 6px; }
.article-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.article-body { padding: 32px; }
.article-body h2 { font-size: 1.4rem; font-weight: 800; margin: 28px 0 16px; color: var(--text); border-left: 4px solid var(--primary); padding-left: 14px; }
.article-body h3 { font-size: 1.15rem; font-weight: 700; margin: 20px 0 12px; color: var(--text); }
.article-body p { color: var(--text2); line-height: 1.9; margin-bottom: 16px; }
.article-body ul, .article-body ol { padding-left: 20px; margin-bottom: 16px; color: var(--text2); }
.article-body li { margin-bottom: 8px; line-height: 1.8; }
.article-body strong { color: var(--text); font-weight: 700; }
.article-body a { color: var(--primary); }
.article-body table { width: 100%; border-collapse: collapse; margin-bottom: 16px; }
.article-body table th, .article-body table td { border: 1px solid var(--border); padding: 10px 14px; font-size: 0.9rem; }
.article-body table th { background: var(--surface2); font-weight: 700; }
.article-body code { background: var(--surface2); padding: 2px 8px; border-radius: 4px; font-size: 0.88em; color: var(--accent); }
.article-body pre { background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: 20px; overflow-x: auto; margin-bottom: 16px; }
.article-actions { padding: 24px 32px; border-top: 1px solid var(--border); display: flex; gap: 12px; }
.like-btn, .share-btn { background: var(--surface2); border: 1px solid var(--border); color: var(--text2); padding: 10px 24px; border-radius: 50px; font-size: 0.9rem; cursor: pointer; transition: all 0.2s; font-family: var(--font); display: flex; align-items: center; gap: 8px; }
.like-btn:hover, .like-btn.liked { background: rgba(249,115,22,0.15); border-color: var(--primary); color: var(--primary); }
.share-btn:hover { background: rgba(99,102,241,0.15); border-color: var(--blue); color: #818cf8; }
.article-nav { padding: 24px 32px; border-top: 1px solid var(--border); display: flex; justify-content: space-between; gap: 16px; }
.nav-prev, .nav-next { font-size: 0.88rem; color: var(--text3); display: flex; align-items: center; gap: 8px; max-width: 48%; transition: color 0.2s; }
.nav-prev:hover, .nav-next:hover { color: var(--primary); }

/* Comment */
.comment-section { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px; margin-top: 24px; }
.comment-section h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 24px; }
.comment-form { margin-bottom: 32px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 12px; }
.comment-form input, .comment-form textarea { background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: 12px 16px; color: var(--text); font-family: var(--font); font-size: 0.9rem; width: 100%; outline: none; transition: border-color 0.2s; }
.comment-form input:focus, .comment-form textarea:focus { border-color: var(--primary); }
.comment-form textarea { resize: vertical; margin-bottom: 12px; }
.comment-form button { background: var(--primary); border: none; color: #fff; padding: 12px 28px; border-radius: 8px; font-size: 0.95rem; font-weight: 700; cursor: pointer; font-family: var(--font); transition: background 0.2s; display: flex; align-items: center; gap: 8px; }
.comment-form button:hover { background: var(--primary-dark); }
.comment-item { display: flex; gap: 14px; margin-bottom: 20px; padding-bottom: 20px; border-bottom: 1px solid var(--border); }
.comment-avatar { width: 40px; height: 40px; border-radius: 50%; background: linear-gradient(135deg, var(--primary), var(--blue)); display: flex; align-items: center; justify-content: center; font-size: 1rem; font-weight: 700; color: #fff; flex-shrink: 0; }
.comment-header { display: flex; align-items: center; gap: 12px; margin-bottom: 8px; }
.comment-name { font-weight: 700; font-size: 0.9rem; }
.comment-time { font-size: 0.78rem; color: var(--text3); }
.comment-content { font-size: 0.88rem; color: var(--text2); line-height: 1.7; }

/* Sidebar */
.article-sidebar { position: sticky; top: 84px; }
.sidebar-widget { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; margin-bottom: 20px; }
.sidebar-widget h4 { font-size: 1rem; font-weight: 700; margin-bottom: 16px; padding-bottom: 12px; border-bottom: 1px solid var(--border); }
.sidebar-item { display: flex; align-items: center; gap: 8px; font-size: 0.88rem; color: var(--text2); padding: 8px 0; border-bottom: 1px solid var(--border); transition: color 0.2s; }
.sidebar-item:hover { color: var(--primary); }
.sidebar-item:last-child { border-bottom: none; }

/* Page header */
.page-header { text-align: center; padding: 40px 0; margin-bottom: 32px; }
.page-header h1 { font-size: clamp(1.8rem, 4vw, 2.8rem); font-weight: 900; margin-bottom: 12px; }
.page-header p { color: var(--text2); font-size: 1rem; }
.cat-filter { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 32px; justify-content: center; }
.filter-btn { background: var(--surface); border: 1px solid var(--border); color: var(--text2); padding: 8px 18px; border-radius: 50px; font-size: 0.88rem; cursor: pointer; transition: all 0.2s; font-family: var(--font); }
.filter-btn:hover, .filter-btn.active { background: var(--primary); border-color: var(--primary); color: #fff; }

/* Search page */
.search-form { margin-bottom: 32px; }
.search-bar { display: flex; background: var(--surface); border: 1px solid var(--border); border-radius: 50px; overflow: hidden; max-width: 600px; margin: 0 auto; }
.search-bar input { flex: 1; background: none; border: none; padding: 14px 24px; color: var(--text); font-family: var(--font); outline: none; }
.search-bar button { background: var(--primary); border: none; padding: 14px 24px; color: #fff; cursor: pointer; font-size: 1rem; }
.empty-state { text-align: center; padding: 60px 0; color: var(--text3); }
.empty-state i { font-size: 3rem; margin-bottom: 16px; display: block; }

/* Login box */
.login-box { background: var(--surface); border: 1px solid var(--border); border-radius: 20px; padding: 48px 40px; width: 400px; box-shadow: var(--shadow); }
.login-logo { font-size: 3rem; text-align: center; margin-bottom: 12px; }
.login-title { font-size: 1.6rem; font-weight: 900; text-align: center; margin-bottom: 8px; }
.login-sub { color: var(--text3); text-align: center; margin-bottom: 32px; font-size: 0.9rem; }
.login-box .form-group { margin-bottom: 20px; }
.login-box label { display: block; font-size: 0.88rem; font-weight: 600; margin-bottom: 8px; color: var(--text2); }
.login-box input { width: 100%; background: var(--bg); border: 1px solid var(--border); border-radius: 10px; padding: 12px 16px; color: var(--text); font-family: var(--font); font-size: 0.95rem; outline: none; transition: border-color 0.2s; }
.login-box input:focus { border-color: var(--primary); }
.err-msg { color: var(--red); font-size: 0.85rem; margin-bottom: 12px; min-height: 20px; }
.login-btn { width: 100%; background: var(--primary); border: none; color: #fff; padding: 14px; border-radius: 10px; font-size: 1rem; font-weight: 700; cursor: pointer; font-family: var(--font); transition: background 0.2s; display: flex; align-items: center; justify-content: center; gap: 8px; }
.login-btn:hover { background: var(--primary-dark); }
.login-hint { text-align: center; color: var(--text3); font-size: 0.82rem; margin-top: 20px; }

/* 404 */
.page-404 { text-align: center; padding: 120px 20px; }
.page-404 .code { font-size: 8rem; font-weight: 900; color: var(--primary); line-height: 1; }
.page-404 h2 { font-size: 1.5rem; margin: 16px 0 8px; }
.page-404 p { color: var(--text3); margin-bottom: 32px; }
.btn-home { background: var(--primary); color: #fff; padding: 12px 32px; border-radius: 50px; font-weight: 700; transition: background 0.2s; display: inline-block; }
.btn-home:hover { background: var(--primary-dark); }

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-links.open { display: flex; flex-direction: column; position: absolute; top: 64px; left: 0; right: 0; background: var(--bg2); border-bottom: 1px solid var(--border); padding: 12px; }
  .nav-toggle { display: block; }
  .hero { padding: 100px 0 60px; }
  .hero-stats { gap: 24px; }
  .cat-grid { grid-template-columns: repeat(4, 1fr); }
  .article-layout { grid-template-columns: 1fr; }
  .article-sidebar { display: none; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

/* 瀵艰埅鎶曠鎸夐挳 */
.nav-link-submit {
  background: var(--primary);
  color: #fff !important;
  border-radius: 8px;
  padding: 6px 14px !important;
  font-weight: 700;
  transition: opacity .2s;
}
.nav-link-submit:hover { opacity: .85; }